Not an apex domain
The domain 86318D1789B8A4D45723860178EA61E5.0191633D726B598F3AEEE2B526AFAFFD.zlD58UP5vUTR5Hk5J5B5.sectigo.com is not the root of its zone.
Instead, try zone transfer on sectigo.com .
Instead, try zone transfer on sectigo.com .